Gamma Radiation Monitoring Articles

  • Performance of some handheld dosimeters used for gamma–ray ambient dose rate measurements

    A study was carried out on the performance of some handheld dosimeters that are used for measuring ambient gamma dose rates. A CsI scintillation–based and two GM–based dosimeters were used to measure the absorbed dose rates in an indoor environment, inside a lead shield, on different floors of a building, in a desert environment and in a boat on the Arabian Gulf. The study showed that while some ...

    By Inderscience Publishers

  • Evaluation of natural radioactivity in rocks of Nilgiri hills and their radiation hazard to mankind

    Twenty three rock samples were collected from various altitudes of Nilgiri hills, Tamil Nadu, India. A survey was carried out to determine the activity concentration of selected radionuclides (238U, 232Th, 40K) by means of gamma–ray spectroscopy using NaI (Tl) detector. From the measured spectra, ...

    By Inderscience Publishers

  • Determination of K shell parameters of silver using high resolution HPGe detector spectrometer

    The K shell parameters such as K shell photoelectric cross–section at K shell binding energy, K shell jump ratio, K shell jump factor, the Davisson–Kirchner ratio and K shell oscillator strength of silver have been determined using high resolution HPGe detector coupled to 16K multichannel analyser. In this method the K X–ray photons in the energy region from 8 to 52 keV are ...

    By Inderscience Publishers

  • Radiation source rate estimation through data assimilation of gamma dose rate measurements for operational nuclear emergency response systems

    This paper presents an evaluation of an innovative data assimilation method that has been recently developed in NCSR Demokritos for estimating an unknown emission rate of radionuclides in the atmosphere, with real–scale experimental data. The efficient algorithm is based on the assimilation of gamma dose rate measured data in the Lagrangian atmospheric dispersion model DIPCOT and uses variational ...

    By Inderscience Publishers

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